To put things a bit into perspective (just for GPU, not well informed about Power architectures to draw conclusions):
1) Redwood based (400:20:8 config, 104mm^2@40nm)
Pixel (GP/s):4.4
Texel (GT/s): 11
Shader (GO/s): 220
GFLOPS: 440
2) Turks based (480:24:8, 118mm^2@40nm)
Pixel (GP/s): 4.4
Texel (GT/s): 13.2
Shader (GO/s): 264
GFLOPS: 528
Xbox360
Pixel (GP/s): 4.0
Texel (GT/s): 8.0
Shader (GO/s): 96
GFLOPS: 240
PS3
Pixel (GP/s): 4.4
Texel (GT/s): 13.6
Shader (GO/s): 74.8
GFLOPS: 255.2 (400.4 theoretical)